Mobility, bioavailability and toxic effects of cadmium in soil samples.

PROKOP, Zbyněk, Pavel ČUPR, V. ZLEVOROVÁ-ZLÁMALÍKOVÁ, Josef KOMÁREK, Ladislav DUŠEK and Ivan HOLOUBEK. Mobility, bioavailability and toxic effects of cadmium in soil samples. Environmental Research. 2003, vol. 91, -, p. 119-126. ISSN 0013-9351.

Basic information

• Original name: Mobility, bioavailability and toxic effects of cadmium in soil samples.
• Name in Czech: mobilita, biodostupnost a toxické efekty kadmia v půdě
• Authors: PROKOP, Zbyněk (203 Czech Republic, guarantor), Pavel ČUPR (203 Czech Republic), V. ZLEVOROVÁ-ZLÁMALÍKOVÁ (203 Czech Republic), Josef KOMÁREK (203 Czech Republic), Ladislav DUŠEK (203 Czech Republic) and Ivan HOLOUBEK (203 Czech Republic).
• Edition: Environmental Research, 2003, 0013-9351.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 30304 Public and environmental health
• Country of publisher: Netherlands
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 1.452
• RIV identification code: RIV/00216224:14310/03:00008644
• Organization unit: Faculty of Science
• Keywords in English: Mobility; bioavailability and toxic effects of cadmium in soil samples.
• Tags: MOBILITY
• Tags: International impact, Reviewed

Abstract

Total concentration is not a reliable indicator of metal mobility or bioavailability in soils. The physicochemical form determines the behavior of metals in soils and hence the toxicity toward terrestrial biota. The main objectives of this study were the application and comparison of three approaches for the evaluation of cadmium behavior in soil samples. The mobility and bioavailability of cadmium in five selected soil samples were evaluated using equilibrium speciation (Windermere humic aqueous model (WHAM), extraction procedures (Milli-Q water, DMSO, and DTPA), and a number of bioassays (Microtox, growth inhibition test, contact toxicity test, and respiration). The mobility, represented by the water-extractable fraction, corresponded well with the amount of cadmium in the soil solution, calculated using the WHAM (r2 0:96; Po0:001). The results of the ecotoxicological evaluation, which represent the bioavailable fraction of cadmium, correlated well with DTPA extractability and also with the concentration of free cadmium ion, which is recognized as the most bioavailable metal form. The results of the WHAM as well as the results of extraction experiments showed a strong binding of cadmium to organic matter and a weak sorption of cadmium to clay minerals.

Abstract (in Czech)

Total concentration is not a reliable indicator of metal mobility or bioavailability in soils. The physicochemical form determines the behavior of metals in soils and hence the toxicity toward terrestrial biota. The main objectives of this study were the application and comparison of three approaches for the evaluation of cadmium behavior in soil samples. The mobility and bioavailability of cadmium in five selected soil samples were evaluated using equilibrium speciation (Windermere humic aqueous model (WHAM), extraction procedures (Milli-Q water, DMSO, and DTPA), and a number of bioassays (Microtox, growth inhibition test, contact toxicity test, and respiration). The mobility, represented by the water-extractable fraction, corresponded well with the amount of cadmium in the soil solution, calculated using the WHAM (r2 0:96; Po0:001). The results of the ecotoxicological evaluation, which represent the bioavailable fraction of cadmium, correlated well with DTPA extractability and also with the concentration of free cadmium ion, which is recognized as the most bioavailable metal form. The results of the WHAM as well as the results of extraction experiments showed a strong binding of cadmium to organic matter and a weak sorption of cadmium to clay minerals.

Links

• GA205/02/0896, research and development project: Name: Fotochemie perzistentních organických látek v ledu a na jeho povrchu

Investor: Czech Science Foundation, Photochemistry of persistent organic compounds in/on ice

• GA525/00/D101, research and development project: Name: In vitro metody pro detekci a studium mechanismů epigenetické toxicity cizorodých látek

Investor: Czech Science Foundation, In vitro methods for detection and studies of epigenetic toxicity of xenobiotics

• GA526/98/1147, research and development project: Name: Diversita a funkční analýza půdních mikrobiálních společenstev v terestrických ekosystémech kontaminovaných persistentními organickými polutanty (POP)

Investor: Czech Science Foundation, Diversity and functional analysis of soil microbial communities in terrestrial ecosystems polluted by persistent organic pollutants (POPs)